やんちゃ坊主 ぼうずじゃなかったです
yancha bōzujanakattadesu

Noun
Desu Copula

The polite, past negative form of やんちゃ坊主

1. Wasn't a mischievous child.; Wasn't a rambunctious boy.

Past/Perfective
Negative
Polite
Casual Register